﻿//Copyright 2008 Kristian Gundry And Rune Juhl-Petersen
//This file is part of Plain.

//Plain is free software: you can redistribute it and/or modify
//it under the terms of the GNU Lesser General Public License as published by
//the Free Software Foundation, either version 3 of the License, or
//any later version.

//Plain is distributed in the hope that it will be useful,
//but WITHOUT ANY WARRANTY; without even the implied warranty of
//MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//GNU Lesser General Public License for more details.

//You should have received a copy of the GNU Lesser General Public License
//along with Plain.  If not, see <http://www.gnu.org/licenses/>.
using System;
using System.Collections.Generic;
using System.Text;

namespace Plain.Validation{
    /// <summary>
    /// Value must not be equal to value provided to NotEqual Attribute
    /// </summary>
    public class NotEqual:Attribute,IValidationAttribute
    {
        public object Value { get; set; }
        /// <summary>
        /// Contructor. <paramref name="o"/> is compared to the property that is to be compared.
        /// </summary>
        /// <param name="o"></param>
        public NotEqual(object o) {
            Value = o;
        }

        #region IValidationAttribute Members
        /// <summary>
        /// Validates
        /// </summary>
        /// <param name="entity"></param>
        /// <param name="o"></param>
        /// <returns></returns>
        public bool Validate(object entity,object o){
            if (o != null && o.Equals(Value)){
                return false;
            }
            return true;
        }

        #endregion
    }
}
